CN218152431U - Magnetic material sliding type on-off material valve - Google Patents

Abstract

The utility model discloses a magnetic material slidingtype break-make material valve relates to magnetic material and annotates material technical field. The utility model relates to a sliding type material valve for opening and closing magnetic material, which comprises a valve rod driving piece, a hollow valve rod and a valve body; the driving piece drives the valve rod to be connected in the circular tubular valve cavity of the valve body in a sliding manner; the upper part of the valve body is externally connected with a material injection cylinder through a transverse feeding pipe, and the lower part of the valve body is externally connected with a mold cavity through a transverse blanking pipe; the valve rod is internally provided with a hollow valve rod cavity with sealed upper and lower ends, the side wall of the valve rod cavity is respectively reserved with a feeding port and a discharging port which are arranged in a matched mode relative to a feeding pipe and a discharging pipe, and a channel from a material injection cylinder to a mold cavity for magnetic material forming raw material slurry is effectively cut off or communicated by means of the sliding movement of a material on-off valve rod; in the product compression molding process, the raw materials extruded and leaked in the die cavity can be effectively prevented from returning to the material injection cylinder channel and the cavity, so that the product molding consistency is ensured, and various product defects caused by leakage are avoided.

Description

Magnetic material sliding type on-off material valve

Technical Field

The utility model relates to a magnetic material annotates material technical field, the more specifically magnetic material slidingtype break-make material valve that says so.

Background

The magnetic shoe is widely applied to various engine casings and used as a stator. The magnetic shoe is formed by a profiling die, the die mainly comprises an upper die, a middle die, a convex die and a material injection runner plate, the forming of the prior known automatic material injection die is to inject slurry into each die cavity of the die through a pipeline, the runner plate and a material injection pore passage by a material injection machine, and the slurry is finally injected into each die cavity of the die and is pressed into a green body by a hydraulic machine under the action of a magnetic field.

At present, in the wet-type forming and pressing process of magnetic materials at home and abroad, slurry in a stirring barrel is generally pumped out through a suction valve and sucked into a material injection cylinder, and then enters a die cavity through a die material sealing valve for pressing.

As shown in fig. 1, the existing mold material sealing valve adopts a conical sealing form, and in practical use, due to problems of processing and assembling precision and the like, a conical surface is eccentric from a sealing ring, so that conical surface deviation is caused, and a material leakage and seepage phenomenon is easily caused; when a conical sealing mode is adopted, because the material valve is not closed tightly in the process of press forming, part of the raw material which enters the die cavity passes through the die gap under high pressure and then passes through the material valve to be pressed back to the material injection cylinder, and the phenomenon of material leakage is generated, so that various forming defects caused by slurry leakage occur on the product, the press forming speed cannot be accelerated, the pressing speed is accelerated, the material leakage condition is more serious, the product qualification rate is lower, and the production efficiency is lower; moreover, the requirement on the machining precision of a valve rod in the valve body is high, the machining difficulty is high, and the cost of accessories is high; in addition, when the mold is opened and the blank is taken, slurry is sprayed from a feed inlet of a mold cavity due to trapped pressure.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The present application seeks to provide a magnetic material sliding type on-off valve which is advantageous in at least one aspect over the prior art described in the background.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

a magnetic material sliding type material on-off valve comprises a valve rod driving piece, a hollow valve rod and a valve body; the driving piece drives the valve rod to be connected in the circular tubular valve cavity of the valve body in a sliding manner; the upper part of the valve body is externally connected with a material injection cylinder through a transverse feeding pipe, and the lower part of the valve body is externally connected with a die cavity through a transverse discharging pipe; the valve rod is internally provided with a hollow valve rod cavity with sealed upper and lower ends, the side wall of the valve rod cavity is respectively reserved with a feeding port and a discharging port which are arranged in a matched mode relative to a feeding pipe and a discharging pipe, and a channel from a material injection cylinder to a mold for magnetic material forming raw material slurry is effectively cut off or communicated by means of the sliding movement of a material valve rod; in the product compression molding process, the raw materials extruded and leaked in the die cavity can be effectively prevented from returning to the material injection cylinder channel and the cavity, so that the product molding consistency is ensured, and various product defects caused by leakage are avoided.

According to the further technical scheme, the valve rod driving piece comprises a driving cylinder body, a driving rod and a driving piston, and the driving piston is connected in the driving cylinder body in a sliding mode; the top end of the driving rod is fixed on the bottom surface of the driving piston, and the bottom end of the driving rod is detachably connected with the valve rod; outlets are reserved on the upper portion and the lower portion of the driving cylinder body, and air pressure or hydraulic pressure is conveniently connected to drive the driving piston to slide up and down.

According to a further technical scheme, the valve body is an annular cavity with an interlayer, the middle part of the valve body is a valve rod cavity, a sealing layer is tightly fixed in the interlayer at the periphery of the valve rod cavity, the upper end and the lower end of the sealing layer are respectively fixed in a pressing mode through an upper pressing cover and a lower pressing cover, and material leakage is avoided.

According to a further technical scheme, spaces for containing space rings are reserved at the positions, close to the feeding pipe and the discharging pipe, of the sealing layer, and the space rings are tightly sleeved on the periphery of the valve rod; the partition ring is an annular sleeve body in a partition grid shape, the sleeve body is divided into partition grid holes through a vertical partition grid plate, an inner and outer circumference sealing structure is adopted, and the material inlet and outlet are of partition rings so as to separate the space of a material inlet channel and a material outlet channel, so that the problem of mutual leakage between the valve body and the inlet and outlet of the valve rod is solved.

According to a further technical scheme, a separated isolation cavity is fixedly connected between the driving cylinder body and the valve body to form an isolation space between the driving cylinder body and the valve body, and raw materials are prevented from leaking into the driving cylinder body.

According to a further technical scheme, the feeding port and the discharging port are formed by a plurality of through holes reserved in the wall of the valve rod cavity, materials can uniformly enter the valve rod cavity to form a stable raw material flow channel conveniently, the through holes can be array-type fine holes, and the shapes of the fine holes can be changed and adjusted according to the types of fluid raw materials.

A method for switching on and off a magnetic material sliding type switching material valve comprises the following steps:

s1, communicating a valve body: the driving piston moves upwards to drive the valve rod to slide upwards in the valve body until a feeding port and a discharging port of the valve rod are respectively aligned with a feeding pipe and a discharging pipe, raw material slurry in the material injection cylinder passes through the valve rod cavity and enters a forming die, and material injection is finished;

s2, disconnecting the valve body: the driving piston moves downwards to drive the valve rod to slide downwards in the valve body until a feeding port and a discharging port of the valve rod are staggered with a feeding pipe and a discharging pipe, the valve body is closed, and a channel from the material injection cylinder to the mold for magnetic material forming raw material slurry is effectively cut off or communicated; in the product forming process, the extruded and leaked raw materials in the die cavity are effectively blocked and return to the material injection cylinder channel and the cavity, so that the product forming consistency is ensured and various product defects caused by leakage are avoided.

The further on-off method further comprises the following steps of S3, material suction of the material injection cylinder: and (3) driving the piston to move upwards to drive the valve rod to slide upwards in the valve body until a feeding port and a discharging port of the valve rod are respectively aligned with a feeding pipe and a discharging pipe, releasing S2 after the valve body is disconnected, trapping the pressure of slurry in a connecting channel between the discharging pipe and a die cavity, and absorbing the pressure of the slurry by the injection cylinder so as to solve the problem that the slurry is trapped to be sprayed from a die feeding port when die opening and blank taking are carried out.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model discloses a magnetic material slidingtype break-make material valve adopts slidingtype break-make material valve, relies on the slidingtype break-make material valve rod to move in the inner and outer circumference sealed structure and moves, under the closed condition, can thoroughly block the shaping ground paste from mould material room to annotate the material jar backward flow seepage phenomenon; the valve body and the driving valve rod of the sliding type on-off material valve adopt an inner and outer circumference sealing layer sealing structure, a material inlet and a material outlet adopt a spacer ring to separate a space of the material inlet and the material outlet, a valve rod cavity of a core part of the driving valve rod is a slurry channel, when the sliding type on-off material valve is in a closed state, the driving valve rod is provided with the material inlet and the material outlet which are respectively sealed by the inner and outer circumference sealing layers, when the sliding type on-off material valve is in an open state, the driving valve rod drives the material inlet and the material outlet to be respectively positioned at a position communicated with an external channel, and slurry enters the channel of the core part of the driving valve rod after entering the material inlet of the sliding type on-off material valve and then is discharged from the material outlet of the sliding type on-off material valve;

(2) The sliding type on-off material valve made of the magnetic material adopts the array type pore arrangement at the upper and lower material openings, thereby not only avoiding the problem that the circumference sealing element is damaged by the large hole easily, but also playing the role of filtering larger impurities in the raw material; according to different fluid raw materials, other corresponding valve rod material inlet and outlet ports can be designed;

(3) The utility model discloses magnetic material slidingtype break-make material valve has designed the spacer ring that can guarantee the effective sealing interval of circumference sealing layer, has guaranteed the business turn over material passageway space of material inlet and outlet on valve body and the valve rod;

(4) The utility model discloses magnetic material slidingtype break-make material valve adopts the circumference sealing layer, and drives the valve rod and remove in circumference sealing layer structure, and the valve rod corresponds with the machining precision and the degree of difficulty reduction of other parts, and manufacturing cost reduces, simultaneously, when driving the valve rod and being in material valve passageway closed position, the last unloading passway of valve rod all faces the circumference sealed face, is in the position that breaks away from the material inlet and outlet way completely and communicates, therefore, has complete blocking function and effect;

(5) The utility model discloses the break-make method of magnetic material slidingtype break-make material valve relies on the slidingtype break-make material valve rod to move the action, under the open mode, the ground paste full flow passes through, under the off-state, has effectively blocked the shaping ground paste that leaks to the notes material jar from the mould die cavity to guarantee that the ground paste that gets into the mould shaping material chamber does not have the seepage loss, has guaranteed the uniformity of product weight and density, has eliminated the product because of leaking various shaping defects that the material produced; the molding raw material in the mold molding cavity is ensured, and no leakage exists in the compression molding process, so that the molding speed is obviously improved; the production efficiency is greatly improved.

Drawings

FIG. 1 is a schematic view of a longitudinal section of a prior art mold sealing valve;

fig. 2 is a schematic view of the structure of a longitudinal section of the magnetic material sliding type material valve when the material valve is opened and closed;

fig. 3 is a schematic view of the longitudinal section structure of the magnetic material sliding type on-off material valve of the present invention when the material valve is disconnected;

FIG. 4 is a schematic view of a longitudinal section of the spacer ring of the present invention;

FIG. 5 is a schematic view of the transverse section of the spacer ring of the present invention

Fig. 6 is a perspective view of the spacer ring of the present invention.

In the figure: 1-a valve stem driver; 2-a valve stem; 3 feeding pipe; 4-pressing the cover; 5, pressing a cover; 6-sealing layer; 7-space ring; 8-a blanking pipe; 9-an isolation chamber; 10-a valve body; 11-a drive cylinder; 12-a drive rod; 13-a drive piston; 14-a plug screw; 21-a valve stem cavity; 22-feeding port; 23-a feed opening; 71-a barrier plate; 72-barrier holes.

Detailed Description

For a further understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.

Example 1

The magnetic material sliding type material on-off valve of the embodiment, as shown in fig. 2 and 3, comprises a valve rod driving member 1, a hollow valve rod 2 and a valve body 10; the driving piece 1 drives the valve rod 2 to be slidably connected in the circular tubular valve cavity of the valve body 10; the upper part of the valve body 10 is externally connected with a material injection cylinder through a transverse feeding pipe 3, and the lower part of the valve body is externally connected with a mold cavity through a transverse blanking pipe 8; the valve rod 2 is internally provided with a hollow valve rod cavity 21 with sealed upper and lower ends, and the side wall of the valve rod cavity 21 is respectively reserved with a feeding port 22 and a discharging port 23 which are arranged in a matched manner relative to the feeding pipe 3 and the discharging pipe 8. The valve rod driving part 1 comprises a driving cylinder 11, a driving rod 12 and a driving piston 13, wherein the driving piston 13 is connected in the driving cylinder 11 in a sliding way; the top end of the driving rod 12 is fixed on the bottom surface of the driving piston 13, and the bottom end is detachably connected with the valve rod 2; outlets are reserved at the upper part and the lower part of the driving cylinder body 11, so that a pneumatic or hydraulic device can be conveniently connected to drive the driving piston 13 to slide up and down, and the corresponding driving cylinder body 11 is a cylinder or a hydraulic cylinder.

The method for switching on and off the magnetic material sliding type material switching valve comprises the following steps:

s1, communicating a valve body: as shown in fig. 2, the driving piston 13 moves upward to drive the valve rod 2 to slide upward in the valve body 10 until the feeding port 22 and the discharging port 23 of the valve rod 2 are aligned with the feeding pipe 3 and the discharging pipe 8, respectively, the raw material slurry in the material injection cylinder passes through the valve rod cavity 21 and enters the forming mold, and the material injection is finished;

s2, disconnecting the valve body: as shown in fig. 3, the driving piston 13 moves downward, the driving valve rod 2 slides downward in the valve body 10, until the feeding port 22 and the discharging port 23 of the valve rod 2 are misaligned with the feeding pipe 3 and the discharging pipe 8, and the valve body 10 is closed.

The magnetic material sliding type material on-off valve of the embodiment can effectively cut off or communicate a channel from the material injection cylinder to a mold for magnetic material molding raw material slurry, and the circular tube-shaped valve rod cavity 21 also plays a role in conveniently quantifying the feeding amount of the slurry, and the quantification can be carried out after the volume of the valve rod cavity 21 is combined with the density calculation of the slurry.

Example 2

The basic structure of the magnetic material sliding type material on-off valve of the embodiment is the same as that of the embodiment 1, and the differences and improvements are as follows: as shown in fig. 2, the valve body 10 is an annular cavity with an interlayer, the middle part is a valve rod cavity 21, the sealing layer 6 is tightly fixed in the interlayer at the periphery of the valve rod cavity 21 to form a circumferential sealing layer structure, the upper end and the lower end of the sealing layer 6 are respectively fixed by the upper gland 5 and the lower gland 4 in a pressing manner, and are generally fixed on the upper end surface and the lower end surface of the valve body 10 by bolts to avoid material leakage. Spaces for accommodating the space rings 7 are reserved at the positions, close to the feeding pipe 3 and the discharging pipe 8, of the sealing layer 6, and the space rings 7 are tightly sleeved on the periphery of the valve rod 2; as shown in fig. 4, 5 and 6, the spacer ring 7 is a grid-shaped annular sleeve body, the sleeve body is divided into a plurality of grid holes 72 by a plurality of vertical grid plates 71, an inner and outer circumference sealing structure is adopted, and the material inlet and outlet adopts the spacer ring 7 to separate the space of the material inlet and outlet channel, so that the problem of mutual leakage between the valve body 10 and the inlet and outlet of the valve rod 2 is solved.

The on-off method of the magnetic material sliding type on-off material valve in the embodiment comprises the following steps:

s1, communicating a valve body: the driving piston 13 moves upwards to drive the valve rod 2 to slide upwards in the valve body 10 until a feeding port 22 and a discharging port 23 of the valve rod 2 are respectively aligned with the feeding pipe 3 and the discharging pipe 8, raw material slurry in the material injection cylinder enters the forming die through the valve rod cavity 21, and material injection is finished;

s2, disconnecting the valve body: the driving piston 13 moves downwards to drive the valve rod 2 to slide downwards in the valve body 10 until the feeding port 22 and the discharging port 23 of the valve rod 2 are staggered with the feeding pipe 3 and the discharging pipe 8, and the valve body 10 is closed.

S3, sucking materials by the material injection cylinder: and (3) driving the piston 13 to move upwards to drive the valve rod 2 to slide upwards in the valve body 10 until the feeding port 22 and the discharging port 23 of the valve rod 2 are respectively aligned with the feeding pipe 3 and the discharging pipe 8, releasing the pressure of slurry trapped in a connecting channel between the discharging pipe 8 and the die cavity after the valve body is disconnected in the step S2, and sucking the slurry by the injection cylinder.

The magnetic material sliding type material on-off valve adopts a circumferential sealing layer structure, the driving valve rod 2 moves in the circumferential sealing layer structure, the machining precision and difficulty of the valve rod corresponding to other parts are reduced, the manufacturing cost is reduced, and meanwhile, when the driving valve rod is positioned at the closing position of a material valve channel, the feeding and discharging channel ports of the valve rod are all right opposite to a circumferential sealing surface and are positioned at the position completely separated from the material inlet and outlet channel communication, so that the magnetic material sliding type material on-off valve has a complete blocking function and effect; in the product forming process, the raw materials extruded and leaked in the die cavity are effectively blocked, and the raw materials are returned to the material injection cylinder channel and the cavity, so that the product forming consistency is ensured, various product defects caused by leakage are avoided, and the problem of material spraying from a die feed inlet due to slurry pressure during die opening and blank taking is also solved.

Example 3

The basic structure of the magnetic material sliding type material on-off valve of the embodiment is the same as that of the embodiment 2, and the differences and improvements are as follows: still fixedly connected with tubulose isolation chamber 9 between drive cylinder body 11 and the valve body 10, it is fixed through flange and bolt generally, form isolation space between the two, avoid the raw materials seepage to advance drive cylinder body 11. The material loading mouth 22 and the feed opening 23 constitute by a plurality of perforation of reserving on the valve stem chamber 21 chamber wall, make things convenient for the material to get back in evenly getting into valve stem chamber 21, the perforation can set up to array etc. under the prerequisite of guaranteeing total through-flow area, both avoided the easy-to-draw problem of hindering the circumference sealing layer of macropore, and simultaneously, still play the filter action of great impurity in the raw materials, the perforation can be array pore, the shape of pore can be according to the type of fluid raw materials, change and the adjustment. It should be noted that the through hole does not need to be formed in the wall of the entire valve rod cavity 21, but only needs to be formed in the wall of the valve rod cavity 21 at a position corresponding to the positions of the feeding pipe 3 and the discharging pipe 8 when the valve bodies are communicated. The top end of the valve rod 2 is detachably connected with the driving rod 12 through the screw plug 14, the upper part of the valve rod cavity 21 is sealed through the screw plug 14, and the valve rod cavity 21 channel of the valve rod core can be cleaned by opening the screw plug 14.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the present invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solutions, but shall fall within the protection scope of the present invention.

Claims (7)

1. The utility model provides a magnetic material slidingtype break-make material valve which characterized in that: comprises a valve rod driving piece (1), a hollow valve rod (2) and a valve body (10); the driving piece (1) drives the valve rod (2) to be connected in a circular tubular valve cavity of the valve body (10) in a sliding mode; the upper part of the valve body (10) is externally connected with a material injection cylinder through a transverse feeding pipe (3), and the lower part of the valve body is externally connected with a mold cavity through a transverse blanking pipe (8); the valve rod (2) is internally provided with a hollow valve rod cavity (21) with sealed upper and lower ends, and the side wall of the valve rod cavity (21) is respectively reserved with a feeding port (22) and a discharging port (23) which are arranged in a matched mode relative to the feeding pipe (3) and the discharging pipe (8).

2. The magnetic material sliding type on-off valve as claimed in claim 1, wherein: the valve rod driving piece (1) comprises a driving cylinder body (11), a driving rod (12) and a driving piston (13), and the driving piston (13) is connected in the driving cylinder body (11) in a sliding mode; the top end of the driving rod (12) is fixed on the bottom surface of the driving piston (13), and the bottom end of the driving rod is detachably connected with the valve rod (2).

3. The magnetic material sliding type on-off valve as claimed in claim 2, wherein: the valve body (10) is an annular cavity with an interlayer, the middle part of the valve body is a valve rod cavity (21), a sealing layer (6) is tightly fixed in the interlayer on the periphery of the valve rod cavity (21) in a sticking mode, and the upper end and the lower end of the sealing layer (6) are fixed in a pressing mode through an upper pressing cover (5) and a lower pressing cover (4) respectively.

4. A magnetic material sliding type on-off valve according to claim 3, wherein: spaces for accommodating the space rings (7) are reserved at the positions, close to the feeding pipe (3) and the discharging pipe (8), of the sealing layer (6), and the space rings (7) are tightly sleeved on the periphery of the valve rod (2); the spacer ring (7) is a spacer grid-shaped annular sleeve body which is divided into spacer grid holes (72) through a vertical spacer grid plate (71).

5. The magnetic material sliding type on-off valve as claimed in claim 3 or 4, wherein: and a tubular isolation cavity (9) is fixedly connected between the driving cylinder body (11) and the valve body (10).

6. The magnetic material sliding type on-off valve according to claim 3 or 4, wherein: the feeding port (22) and the discharging port (23) are formed by a plurality of through holes reserved on the wall of the valve rod cavity (21).

7. The magnetic material sliding type on-off valve as claimed in claim 6, wherein: the through holes are array-type fine holes.

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